Genetics was the key information that was not known during Darwin’s time.
One-celled (single-celled)
organisms, however, tend to be different from those with many cells.Larger celled organisms <span>such
as plants and animals, have a higher degree of specialization where the cells
work together and function to create a living organism.</span>
" This is the most stupidest answer / question ever!"
Pyloric sphincter
sorry its a littlle late:(